highaltitude.log.20190318

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[00:24] <SpacenearUS> New position from 03WB9SKY-11 after 0317 hours silence - 12https://tracker.habhub.org/#!qm=All&q=WB9SKY-11
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[01:29] <SpacenearUS> New position from 03KC2VMF after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KC2VMF
[01:58] <SpacenearUS> New position from 03U3S30 after 037 hours silence - 12https://tracker.habhub.org/#!qm=All&q=U3S30
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[03:08] <SpacenearUS> New position from 03U3B-25 after 0315 hours silence - 12https://tracker.habhub.org/#!qm=All&q=U3B-25
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[08:06] <Darkside> PE2BZ: please run a git pull and restart when you can
[08:06] <Darkside> just fixed a potentially very nasty bug
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[09:08] <SpacenearUS> New vehicle on the map: 03MARS2018 - 12https://tracker.habhub.org/#!qm=All&q=MARS2018
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[09:23] <SpacenearUS> New position from 03SP1ZZW after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=SP1ZZW
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[10:10] <llnz> There is a radiosonde just launched from Paraparaumu that's being tracked
[10:11] <Darkside> llnz: oh nic!
[10:12] <Darkside> i sae the few stations up in the north island
[10:12] <Darkside> but hadnt seen any sonde being tracked yet
[10:13] <Darkside> interesting launch time, 1 hr earlt
[10:13] <llnz> I saw the presentation at LCA this year and thought I could do that
[10:13] <Darkside> i gave that presentation :-)
[10:13] <Darkside> well, me and mwheeler
[10:14] <Darkside> so PKB_AUTO_RX is your station?
[10:15] <llnz> Yes, running on my laptop currently, will set up the rPi in the next few days
[10:15] <Darkside> cool
[10:16] <Darkside> but yeah, good location for tracking sondes from that station
[10:16] <Darkside> it'll be interesting to see how regular the launches are from there
[10:17] <Darkside> llnz: so what antenna are you using?
[10:18] <llnz> They launch at 10:30am and 10:30pm NZT from there according to their website
[10:19] <llnz> Using the dipole from the rtl-sdr kit
[10:19] <Darkside> ok interesting
[10:19] <Darkside> ok
[10:20] <Darkside> definitely worth building (or buying) an externally mountable antenna to get better reception
[10:20] <Darkside> but see ho wyou go
[10:21] <llnz> Yeah. I have a better spot for an external antenna
[10:22] <Darkside> anyway, good job getting set up :-)
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[10:39] <SpacenearUS> New vehicle on the map: 03SP3KRE-12 - 12https://tracker.habhub.org/#!qm=All&q=SP3KRE-12
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[11:10] <SpacenearUS> New vehicle on the map: 03SITS-2 - 12https://tracker.habhub.org/#!qm=All&q=SITS-2
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[11:24] <SpacenearUS> New vehicle on the map: 03BERKOHAB - 12https://tracker.habhub.org/#!qm=All&q=BERKOHAB
[11:28] <SpacenearUS> New vehicle on the map: 03KC2VMF_chase - 12https://tracker.habhub.org/#!qm=All&q=KC2VMF_chase
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[11:44] <llnz> Awesome, I'm pretty sure it's on the ground now, lost at about 2k alt
[11:48] <Darkside> now to keep watching and go recover one :-)
[11:50] <Darkside> gnight...
[11:51] <llnz> :-)
[11:51] <llnz> Bye
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[12:00] <Nilkki> Hi!, I saw comment like this: "Comment: RS41 R1120013 402.000 MHz BT 07:44:00". What that BT 07:44:00 means?
[12:03] <SpacenearUS> New vehicle on the map: 03SQ5PGC_chase - 12https://tracker.habhub.org/#!qm=All&q=SQ5PGC_chase
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[12:16] <dbrooke> Nilkki: I'm not sure exactly what the value means but it's the Burst/Kill timer data
[12:18] <dbrooke> I believe it's about turning the radio off some time after burst
[12:18] <SpacenearUS> New position from 03KC2VMF after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KC2VMF
[12:34] <PE2BZ> Darkside done :-)
[12:41] <Nilkki> OK. I've never seen such comment before
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[12:45] <YO3ICT> Clb=-8.7m/s 403.92MHz Type=RS41-SG BK=Timed(075406h)
[12:45] <YO3ICT> For example, this one will keep transmitting for another 7h 54m 6 sec
[12:46] <YO3ICT> Plenty of time to try to recover it.
[12:47] <YO3ICT> If it is already on the ground, just drive to the last reported position. You will hear it within some hundred meters range. Magnetic mount antenna on car roof.
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[13:17] <Nilkki> BT = Battery BK = Burst kill ?? So BT 07:44:00 means that battery time is 07:44:00 remain
[13:19] <YO3ICT> BT burst timer
[13:19] <YO3ICT> BK Burst kill, IIRC
[13:20] <YO3ICT> Some sondes do not have it activated, some are killing the transmissions right at balloon burst, and some are keeping transmitting 8 hours or more after balloon burst.
[13:21] <YO3ICT> At my local launch site, they have 8h30m BT
[13:22] <YO3ICT> They launch twice a day, at 0000 and 1200 UTC. The problem is that you cannot get 2 of them to transmit at the same time. So either you know the landing spot, or you go to recover just one : the one still transmitting.
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[14:12] <SpacenearUS> New vehicle on the map: 03SOLAR-WL - 12https://tracker.habhub.org/#!qm=All&q=SOLAR-WL
[14:48] <happysat> @Darkside i did try i-Met4 in my backyard with latest test branch, great fast detection, working fine good job :-)))
[14:48] <happysat> http://happysat.nl/i-Met4.png
[14:48] <happysat> right is Zilogs decoder
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[15:00] <dc__> hi, has anyone played with high-resolution (30-50MP camera0 ground photography from a HAB
[15:00] <dc__> ?
[15:02] <PE2BZ> I think some flew a Canon digital camera, but 30 - 50 MP I am not aware of. You cannot tranmit that resolution, so payload recovery is a must than ?
[15:02] <dc__> yes it would be a bit expensive to lose the payload
[15:03] <dc__> we're mapping solar panels in the UK, and satellite imagery is not high resolution enough (or extremely expensive)
[15:04] <dc__> for comparison, satellite images are up to $23 per km2
[15:05] <PE2BZ> You would have little control about the flight path with a hab flight
[15:07] <dc__> understood, the goal would be to launch nearby the main area of interest
[15:07] <PE2BZ> I would rent a hot air balloon :-)
[15:09] <PE2BZ> You would rise to a given altitude (depending on balloon size and payload weight) with different altitudes and one fixed zoom camera? Does not look easy to me.
[15:09] <PE2BZ> then it would burst and come down also on different altitudes.
[15:10] <PE2BZ> What would be the cost to rent a camera plane....
[15:10] <dc__> that I'm exploring too, but I want to make this low cost, open and accessable to others
[15:12] <PE2BZ> You have to have a very clear sky.... Good luck !
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[15:25] <daveake> You'd need a clear day (obviously) but not just cloud-free; you'd want low humidity also
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[16:19] <dc__> I see, I'll do some more calculations :)
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[19:10] <SpacenearUS> New position from 03HA3PL-11 after 035 days silence - 12https://tracker.habhub.org/#!qm=All&q=HA3PL-11
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[20:58] <SpacenearUS> New vehicle on the map: 03KN4KEK-2 - 12https://tracker.habhub.org/#!qm=All&q=KN4KEK-2
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[22:51] <SpacenearUS> New position from 03U3B-25 after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=U3B-25
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[00:00] --- Tue Mar 19 2019